#include <stdio.h>
#include <string.h>

int main(int argc , char* argv[])
{
  if (argc >  1)
  {
    printf("you have some options!\n");
    if (strcmp(argv[1] ,"-a") == 0)
    {
      printf("hello world by -a!\n");
    }
    if (strcmp(argv[1],"-b") == 0)
    {
      printf("hello linux by -b\n");
    }
  }
  else
  {
    printf("you have no options!\n");
  }
  return 0;
}
